Razor (ASP.NET MVC ViewEngine) Language Pack

All auto-detect tests are passing.
I also added a test case for Razor and new style file extending vs.css with razor supports.

![razorpreview](https://f.cloud.github.com/assets/5981331/1791567/294b6b0a-6990-11e3-88d0-50f6e7b2e756.png)